| Abbreviation | Definition |
|---|---|
| ANTA | All Nippon Travel Agents |
| ANTO | Austrian National Tourist Office |
| AOT | Arizona Office of Tourism |
| AOTB | Auburn and Opelika Tourism Bureau |
| AOTB | Auburn Opelika Tourism Bureau |
| APLT | Asia Pacific Lecture Tour |
| APOT | Asia Pacific Onboard Travel |
| APRD | Arapahoe Park and Recreation District |
| APT | Australian Pacific Touring |
| APTA | Association for Promotion of Tourism to Africa |
| APTC | All Pacific Travel Concept |
| APTM | Asia Premium Travel Mart |
| APTM | Asian Premium Travel Mart |
| APTMS | Asia Pacific Travel Marketing Services |
| AQWA | Aquarium of Western Australia |
| ARM | Airline Route Map |
| AROA | Arkansas River Outfitters Association |
| ARPV | Association Romande des Passeports Vacances |
| AS | Airline Schedule |
| ASATA | Association of South African Travel Agents |